The objectives of this paper is to propose the pharmacoepidemiologic methodology to Research for Sasang Constitutional Pharmacology. We mainly searched "Journal of Pharmacoepidemiology and Risk Management". And we also searched "J Korean Oriental Med.", "J of Sasang Constitutional Med.", "J. Oriental Physiology & Pathology", "Korean J Orient Int Med." using these kew words - "adverse event" or "side effect" and "Sasang Contitution" or "Constitution" or "Constitutional medicine". Through the examination of the Pharmacoepidemiologic methodology and current research for sasang constitiutional pharmacology, we could establish the proposal to collect objective constitutional medical reaction. For the actualization of this proposal, the more advanced studies will have to be carried out continuously.